$\"\"$

The expression is $\"\"$ .

$\"\"$ (Distributive property: $\"\"$ )

$\"\"$ (Multiply: $\"\"$ )

$\"\"$ (Product of two same signs is positive)

Apply commutative property of addition: a + b = b + a.

$\"\"$

$\"\"$ (Subtract: $\"\"$ ) $\"\"$

The solution of $\"\"$ $\"\"$ .